ATE281534T1 - METAL REFINING PROCESS, IN PARTICULAR TWO-STAGE OXYGEN INFLATING PROCESS - Google Patents

METAL REFINING PROCESS, IN PARTICULAR TWO-STAGE OXYGEN INFLATING PROCESS

Info

Publication number
ATE281534T1
ATE281534T1 AT02007437T AT02007437T ATE281534T1 AT E281534 T1 ATE281534 T1 AT E281534T1 AT 02007437 T AT02007437 T AT 02007437T AT 02007437 T AT02007437 T AT 02007437T AT E281534 T1 ATE281534 T1 AT E281534T1
Authority
AT
Austria
Prior art keywords
metal refining
oxygen
stage oxygen
refining
oxygen inflating
Prior art date
Application number
AT02007437T
Other languages
German (de)
Inventor
Balu Sarma
Ronald Joseph Selines
John Erling Anderson
William John Mahoney
Original Assignee
Praxair Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Praxair Technology Inc filed Critical Praxair Technology Inc
Application granted granted Critical
Publication of ATE281534T1 publication Critical patent/ATE281534T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A metal refining method particularly useful with a basic oxygen steelmaking process, wherein during an initial period, refining oxygen is provided into the furnace headspace surrounded by a shroud comprising oxygen and inert gas, and during a subsequent period refining oxygen is provided into the furnace headspace surrounded by a flame shroud.
AT02007437T 2001-06-22 2002-03-29 METAL REFINING PROCESS, IN PARTICULAR TWO-STAGE OXYGEN INFLATING PROCESS ATE281534T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/886,279 US6432163B1 (en) 2001-06-22 2001-06-22 Metal refining method using differing refining oxygen sequence

Publications (1)

Publication Number Publication Date
ATE281534T1 true ATE281534T1 (en) 2004-11-15

Family

ID=25388770

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02007437T ATE281534T1 (en) 2001-06-22 2002-03-29 METAL REFINING PROCESS, IN PARTICULAR TWO-STAGE OXYGEN INFLATING PROCESS

Country Status (13)

Country Link
US (1) US6432163B1 (en)
EP (1) EP1270748B1 (en)
JP (1) JP4227346B2 (en)
KR (1) KR100604768B1 (en)
CN (1) CN1266288C (en)
AT (1) ATE281534T1 (en)
AU (1) AU785348B2 (en)
BR (1) BR0201028B1 (en)
CA (1) CA2379591C (en)
DE (1) DE60201780T2 (en)
MX (1) MXPA02003241A (en)
TW (1) TW593685B (en)
ZA (1) ZA200202534B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6875398B2 (en) * 2003-01-15 2005-04-05 Praxair Technology, Inc. Coherent jet system with outwardly angled flame envelope ports
US20040178545A1 (en) * 2003-03-14 2004-09-16 Cates Larry E. System for optically analyzing a molten metal bath
US20050145071A1 (en) * 2003-03-14 2005-07-07 Cates Larry E. System for optically analyzing a molten metal bath
US6932854B2 (en) * 2004-01-23 2005-08-23 Praxair Technology, Inc. Method for producing low carbon steel
JP4699394B2 (en) * 2004-02-16 2011-06-08 メジャーメント テクノロジー ラボラトリーズ コーポレイション Fine particle filter, method of using the same, and manufacturing method
BRPI0510988A (en) * 2004-05-14 2007-12-04 Boc Group Inc melting metal refining
US7438848B2 (en) * 2004-06-30 2008-10-21 The Boc Group, Inc. Metallurgical lance
AU2007295860A1 (en) * 2006-09-14 2008-03-20 Silicium Becancour Inc. Process and apparatus for purifying low-grade silicon material
US8323558B2 (en) * 2009-11-30 2012-12-04 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic control of lance utilizing counterflow fluidic techniques
US20110127701A1 (en) * 2009-11-30 2011-06-02 Grant Michael G K Dynamic control of lance utilizing co-flow fluidic techniques
US8377372B2 (en) * 2009-11-30 2013-02-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic lances utilizing fluidic techniques
CN111304581B (en) * 2020-03-21 2022-07-12 哈尔滨工程大学 Circulating carburization treatment method for carburization layer on surface of heavy-duty gear

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1424029A (en) 1964-01-06 1966-01-07 Union Carbide Corp Method and apparatus for introducing a stream of process gas into a bath of molten metal
US4622007A (en) 1984-08-17 1986-11-11 American Combustion, Inc. Variable heat generating method and apparatus
US5100313A (en) 1991-02-05 1992-03-31 Union Carbide Industrial Gases Technology Corporation Coherent jet combustion
US5714113A (en) 1994-08-29 1998-02-03 American Combustion, Inc. Apparatus for electric steelmaking
US5823762A (en) 1997-03-18 1998-10-20 Praxair Technology, Inc. Coherent gas jet
US6125133A (en) * 1997-03-18 2000-09-26 Praxair, Inc. Lance/burner for molten metal furnace
US5814125A (en) 1997-03-18 1998-09-29 Praxair Technology, Inc. Method for introducing gas into a liquid
US6096261A (en) 1997-11-20 2000-08-01 Praxair Technology, Inc. Coherent jet injector lance
US6176894B1 (en) * 1998-06-17 2001-01-23 Praxair Technology, Inc. Supersonic coherent gas jet for providing gas into a liquid
US6171544B1 (en) 1999-04-02 2001-01-09 Praxair Technology, Inc. Multiple coherent jet lance
US6142764A (en) * 1999-09-02 2000-11-07 Praxair Technology, Inc. Method for changing the length of a coherent jet
US6139310A (en) 1999-11-16 2000-10-31 Praxair Technology, Inc. System for producing a single coherent jet
US6241510B1 (en) 2000-02-02 2001-06-05 Praxair Technology, Inc. System for providing proximate turbulent and coherent gas jets

Also Published As

Publication number Publication date
EP1270748A3 (en) 2003-06-25
CA2379591A1 (en) 2002-12-22
ZA200202534B (en) 2002-10-24
BR0201028B1 (en) 2011-04-05
BR0201028A (en) 2003-02-11
CN1266288C (en) 2006-07-26
CN1393569A (en) 2003-01-29
JP4227346B2 (en) 2009-02-18
EP1270748A2 (en) 2003-01-02
AU2934802A (en) 2003-01-02
MXPA02003241A (en) 2004-09-27
TW593685B (en) 2004-06-21
US6432163B1 (en) 2002-08-13
CA2379591C (en) 2006-12-05
KR100604768B1 (en) 2006-07-26
DE60201780T2 (en) 2005-11-03
EP1270748B1 (en) 2004-11-03
KR20030001229A (en) 2003-01-06
DE60201780D1 (en) 2004-12-09
JP2003013127A (en) 2003-01-15
AU785348B2 (en) 2007-02-01

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